Is tds meter profitable to sell on Amazon United Kingdom?

The niche generates £83K/yr across 17 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is -16.7%. Flapen's verdict: Skip it (44/100).

How competitive is the tds meter niche?

12 brands and 16 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 81% of demand.

What do buyers complain about in tds meter?

Top complaints mined from reviews: Functionality-Overall, Quality-Overall, Instructions/User Manual/Troubleshooting. The return rate is 1.2%.

When does demand for tds meter peak?

Demand peaks in Apr–May–Jul; the busiest month runs 1.9× the quietest.

What does it cost to enter the tds meter niche?

Listings span £3.05–£15.47; the average listing price is £6.67 (sweet spot $15–$100). The average incumbent carries 663 reviews — the moat a new listing must climb.

tds meter

Skip it

Prices mostly outside the sweet spot ($3.05–$15.47) — this niche doesn't clear our bar today.

Returns

Great1.2%

return rate — above 5% kills the launch gate

Conversion

Great8.5%

search→purchase rate — share of searches ending in a sale

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Review moat

Good662.59

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay81%

top-5 brand share — brands hold most of the demand

Competition

Okay65%

top-5 click share — leaders hold, buyers still browse

Market size

Bad£83K

£83K/yr · 146K searches

Avg price

Bad£6.67

avg listing price — sweet spot $15–$100

Growth

Bad-16.7%

90-day search growth — must beat 0% to launch

Price range

Bad£3.05–£15.47

cheapest to priciest tracked listing — scored on the share inside $15–$100

Signals Low Review Barrier

According to Flapen's Amazon United Kingdom niche tracking, tds meter is a £83K/yr Amazon United Kingdom market (146K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Apr–May–Jul. Verdict: Skip it — 44/100.

Data updated Jul 21, 2026 · scored weekly · How we score niches

tds meter market data

Units sold / yr: 10K–13K; avg 250–500/product
Revenue / yr: £67K–£83K; units × avg price
Conversion rate: 8.5%
Avg BSR: #83
Page quality: 0%
Prime: 100%
Sponsored: 88%
Out of stock: 10.2%
Avg brand age: 31 months
Avg seller age: 203 days

Competition & brand share

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 falling

Sellers

Top-5 brand share

81%

Top 20: 100%

Top-5 click share

65%

Top 20: 100%

Open market

15%

ARCHER LIFE HALL31%
VARIFY26%
QNCIGER18%
ausyde4%
flintronic4%
Bestgle4%
Open — no brand owns it (6 brands, 15%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -16.7% search growth over the last 90 days.

Peak months: Apr, May, Jul · busiest ÷ quietest = 1.9×

Open Trend

Top tds meter search terms

tds meter38K/yr -9.1%9.2% conv.
water tester34K/yr -19.4%5.4% conv.
tds meter digital water tester30K/yr -13.7%7.7% conv.
water quality tester10K/yr -12.5%5.2% conv.
water tester kit for drinking water5K/yr -26.0%6.4% conv.
digital water tester6K/yr -31.1%5.0% conv.
tds water tester6K/yr -2.1%7.3% conv.
tds5K/yr -11.4%4.4% conv.
ppm meter3K/yr -8.9%5.5% conv.
drinking water tester3K/yr -42.4%6.3% conv.

All search terms

Top tds meter products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 17 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Instant 4-in-1 TDS Meter Digital Water Tester for Drinking Water | Accurate 09990 PPM EC & Temp Readings | Ideal for RO Systems Aquariums Pools Built for Professionals Easy for Anyone

VARIFY£8.124.4★1,425 rev

QNCIGER TDS Meter Digital Water Quality Tester with Automatic Temperature Compensation (ATC) 0-9990 ppm Range for Drinking Water Tap Water Aquariums Water Filters (Blue)

QNCIGER£7.644.2★724 rev

TDS Meter Digital Water Tester for Drinking Water 4 in 1 TDS Water Quality Tester Portable 0-9990ppm TDS EC & Temp(C F) Meter Tester Testing for Drinking Water RO/DI System

ARCHER LIFE HALL£7.114.2★53 rev

2025 New TDS Meter Digital Water Tester 0-9990 ppm Water Quality Tester Portable Water Testing Kits for Drinking Water Farming Aquariums Pools

ARCHER LIFE HALL£6.444.2★68 rev

TDS Meter Digital Water Quality Tester for RO-RODI System Drinking Water Aquariums Hydroponics 0-9990 ppm Measuring Range 1 ppm Increments 2% Readout Accuracy BLack

ARCHER LIFE HALL£6.224.1★101 rev

Newest

by launch date

TDS Meter Digital Water Tester 4 in 1 EC & Temperature (/) Meter 0-9999 ppm Water Quality Tester for Drinking Water Aquarium Ro-Rodi System

ARCHER LIFE HALL£7.5235 rev

5d ago

Boulton TDS Meter Digital Water Tester (Battery Included) - 0-9990 ppm Measuring Range Water Quality Testing for Household Drinking Water Aquariums Hydroponics Swimming Pools 1 ppm increments

BOULTON UK£3.0511 rev

5mo ago

AFIODA TDS Meter Digital Water Quality Tester with ATC

AFIODA£5.148 rev

8mo ago

TDS Meter Digital Water Tester for Drinking Water 4 in 1 TDS Water Quality Tester Portable 0-9990ppm TDS EC & Temp(C F) Meter Tester Testing for Drinking Water RO/DI System

ARCHER LIFE HALL£7.1153 rev

10mo ago

Instant 4-in-1 TDS Meter Digital Water Tester for Drinking Water | Accurate 09990 PPM EC & Temp Readings | Ideal for RO Systems Aquariums Pools Built for Professionals Easy for Anyone

VARIFY£8.121,425 rev

11mo ago

What buyers say about tds meter

What buyers praise and complain about, mined from review topics.

What buyers love

Ease Of Use31%

“Easy to use”

Value For Money14%

“Good value for money”

Quality-Overall12%

“Seems well made”

Advertised Vs Actual Product9%

“Does what it says well”

Water Resistance6%

“Great for testing water quality”

Filtration5%

“Great product, no issues, bought it to see when my RO filter needs changing”

Efficiency4%

“Works perfectly”

Portability3%

“Nice tool to carry about when camping”

Durability2%

“Sturdy product”

Safety Standards2%

“This is great to show how safe water is to drink”

What buyers complain about

Functionality-Overall27%

“Did not work”

Quality-Overall12%

“Poor quality”

Instructions/User Manual/Troubleshooting8%

“instructions not very good”

Advertised Vs Actual Product7%

“This was advertised +ph but no way of reading ph”

Value For Money7%

“Not worth it”

Water Resistance7%

“cause limescale in hard water areas”

Filtration6%

“my filtered water is showing up as lesser quality than our tap water which makes no sense”

Color4%

“As others say hard to distinguish colours for specific results”

Ease Of Use4%

“NOT Easy to Use”

Display-Overall3%

“Confusing display”

Top return reasons

Functionality-Overall56%

Defective Material/Parts11%

Color5%

Display-Overall4%

Advertised Vs Actual Product4%

Quality-Overall3%